Larus cachinnans

(last update: February 16, 2013)

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cachinnans in Poland

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cachinnans plumages

1cy August
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2cy January
2cy February
2cy March
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2cy May
2cy June
2cy July
2cy August
2cy September
2cy October
2cy November
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3cy January
3cy February
3cy March
3cy April
3cy May
3cy June
3cy July
3cy August
3cy September
3cy October
3cy November
3cy December

sub-adult January
sub-adult February
sub-adult March
sub-adult April
sub-adult May
sub-adult June
sub-adult July
sub-adult August
sub-adult September
sub-adult October
sub-adult November
sub-adult December

adult January
adult February
adult March
adult April
adult May
adult June
adult July
adult August
adult September
adult October
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adult December

Larus cachinnans 2CY-4CY PACX September 2010 - March 2012, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Yellow PACX and metal (PLG) DN25320, ringed as pullus on May 13 2009 at Zwirownia, Zakole, Poland, (50°02' N,  19°28' E). This is a mixed breeding colony in S Poland (near Jankowice), with most birds breeding here cachinnans, but in this area also records of very few michahellis are possible (see PDF). PACX is classic cachinnans.

Recoveries:

PACX	13-5-2009	Zwirownia, Zakole	cach colony	pull	50°02' N	19°28' E
PACX	11-9-2010	Deponie Pohlsche Heide	cach	2cy	52°23' N	08°46' E
PACX	11-9-2010	Grube Nord, Hävern	cach	2cy	52°26' N	09°00' E
PACX	3-6-2011	Deponie Pohlsche Heide	cach	3cy	52°23' N	08°46' E
PACX	1-7-2011	Deponie Pohlsche Heide	cach	3cy	52°23' N	08°46' E
PACX	22-3-2012	Deponie Pohlsche Heide	cach	4cy	52°23' N	08°46' E

below: cachinnans 2CY PACX September 11 2010, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Still no complete grye saddle.

below: upper TT, inner GC and many MC now moulted in partial autumn moult.

below: cachinnans 3CY PACX June 03 2011, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Moulting inner primaries P1-P2, now adult-like grey, P5-P10 old 2nd gen. Note pattern on old 2nd gen secondaries and tail.

below: classic 2nd summer plumage: snow white head, saturated bare parts, old 3rd gen inner GC and upper TT still present.

below: cachinnans 3CY PACX July 01 2011, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Classic 2nd summer plumage: snow white head, saturated bare parts, active complete moult revealed by fresh coverts and upper tertials. Also, P1-P4 new adult-like 3rd gen, central primaries missing, P7-P10 still old 2nd gen.

below: cachinnans 4CY PACX March 22 2012, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Adult-like plumage in resting bird, but when wings are raised, obvious immature secondaries and greater primary coverts. Note relatively short pale tongue and broad sub-terminal band on 3rd gen P10 and no mirror on P9.